圆柱渐开线齿轮和齿轮副 第2部分：齿厚和侧隙的计算与测量

[中文适用范围]： 本文件规定了当期望齿厚已知时，为具有恒定传动比的外部和内部圆柱渐开线齿轮传动确定规格限的计算程序。它还展示了侧隙与齿厚、中心距以及小齿轮和齿轮啮合中的齿偏差之间的关系。 本文件适用于以下类型的齿轮： - 外部和内部平行轴圆柱渐开线直齿和斜齿齿轮； - 渐开线蜗杆和交错轴齿轮； - 直齿和斜齿齿条； - 渐开线直齿和斜齿扇形齿轮。 本文件中的公式适用于所有尺寸和材料以及所有制造方法的齿轮。本文件不提供选择齿厚或厚度公差的指导。 [外文原描述]： This document establishes the calculation procedures for determining specification limits for external and internal cylindrical involute gearing with constant gear ratio when the desired tooth thickness is known. It also shows the relationships between backlash and the tooth thickness, centre distance, and tooth deviations in a pinion and gear mesh. This document applies to the following types of gears: — external and internal parallel axis cylindrical involute spur and helical gears; — involute worms and crossed axis gears; — spur and helical racks; — involute spur and helical sector gears. The formulae in this document apply to gears of all sizes and materials, and to all manufacturing methods. This document does not provide guidance on selecting the tooth thickness or the tolerance on the thickness.